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Taiwan Semiconductor Corporation P6SMB68AH
- Part No.:
- P6SMB68AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68AH.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,512
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Product details
Overview
P6SMB68AH from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 64.6–71.4 V, stand-off voltage of 58.1 V, and clamping voltage of 92.0 V at 6.8 A peak pulse current. It features glass-passivated junction, AEC-Q101 qualification, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transients.
For engineers reviewing the P6SMB68AH datasheet, P6SMB68AH pinout, P6SMB68AH application, or P6SMB68AH equivalent, this device is selected for high-reliability DC power rail protection in automotive ECUs, industrial control I/O modules, and LED driver input stages where fast clamping (<1.0 ps response), low leakage (<1 µA @ 58.1 V), and robust 600W surge handling are required.
Technical Context
The P6SMB68AH operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified VBR (64.6–71.4 V), entering low-impedance clamping mode to limit transient energy. Its DO-214AA (SMB) package enables automated placement and supports 100 A non-repetitive forward surge capability.
Thermal performance is defined by RθJC = 10 °C/W and RθJA = 55 °C/W, enabling operation up to TJ = +150 °C. It exhibits a VBR temperature coefficient of 0.104 %/°C and junction capacitance <100 pF at 1 MHz under zero bias - critical for minimizing signal distortion in protected lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V - defines precise avalanche initiation window for repeatable clamping onset |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 92.0 V @ 6.8 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPSM | 600 W - peak pulse power handling per single 10/1000 µs waveform, derated above 25°C |
| IR @ VWM | <1 µA - ultra-low reverse leakage ensures minimal standby power loss and signal integrity |
| TJ max | +150 °C - extended junction temperature rating supports under-hood automotive and industrial environments |
| Response time | <1.0 ps - sub-picosecond turn-on enables protection against ESD and fast transients |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode-banded unidirectional configuration. Matte tin-plated leads, RoHS and halogen-free compliant, moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / surge return node | Connected to system ground or low-impedance return path during transient clamp event |
| Cathode | Protected line connection / high-side terminal | Connected to the line being protected (e.g., 48V rail, CAN bus, sensor supply); polarity marking on package body |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Guarantees immunity to standardized automotive load-dump and inductive-switching transients (Pulse 1/2a/2b/3a/3b) |
| Low profile SMB package | Enables high-density PCB layouts and compatibility with standard SMT reflow profiles |
| Junction-to-case thermal resistance | 10 °C/W - supports efficient heat transfer to copper pour or heatsink pad for sustained surge duty |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 12V/24V power inputs and LIN/CAN signal lines in BCMs exposed to load dump and jump-start surges. IC Role / Device Role: Primary overvoltage clamp placed between supply rail and ground, upstream of LDOs and microcontrollers. Use Value: Limits transient voltage to ≤92.0 V, preventing latch-up or permanent damage to 3.3V/5V logic ICs powered from regulated rails. | Use Scenario: Shields 24V digital input channels in programmable logic controllers from field-wiring induced transients and relay coil flyback. IC Role / Device Role: Front-end TVS element across input terminals, working with series current-limiting resistor and optocoupler input stage. Use Value: Clamps 1 kV/500 A surge (10/1000 µs) to safe levels within 1 ps, preserving signal integrity and enabling >100,000-cycle input reliability. |
| LED Streetlight Driver Input Stage | 48V Telecom Power Supply Interface |
Use Scenario: Safeguards AC/DC and DC/DC converter inputs in outdoor LED drivers subjected to lightning-induced surges on long feeder lines. IC Role / Device Role: First-line transient suppressor on bulk DC bus (e.g., 48V or 54V), coordinated with MOV and fuse. Use Value: Absorbs 600W peak pulses without degradation, maintaining VWM = 58.1 V to avoid false triggering during normal 48V nominal operation. | Use Scenario: Protects primary-side controller ICs and gate drivers in 48V telecom rectifiers exposed to hot-swap and backup battery switching events. IC Role / Device Role: Unidirectional TVS on 48V input rail, positioned before input filter capacitor and controller enable pin. Use Value: Delivers 92.0 V clamping at 6.8 A, ensuring downstream ICs see no more than 95% of their absolute maximum rating during worst-case 10/1000 µs surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | Breakdown range 71.1–78.6 V; VC = 103 V @ 6.2 A; same DO-214AA package | Higher clamping voltage reduces margin for 68V-rated downstream components | Select when higher VBR tolerance is acceptable and system VMAX allows ≥103 V transient excursion |
| 1.5SMC68A | Same VBR (64.6–71.4 V) but larger DO-214AB (SMC) package; PPPSM = 1500 W | Requires PCB layout change; suited for higher-energy surge environments beyond 600W | Choose only if board space permits larger footprint and system requires >600W single-pulse rating |
Compared with SMBJ64A and 1.5SMC68A, the P6SMB68AH delivers optimal balance of precision clamping (92.0 V), compact SMB footprint, and AEC-Q101 qualification - making it preferred for space-constrained automotive and industrial designs requiring certified reliability without over-engineering.
Availability
P6SMB68AH is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, LED driver power stages, and 48V telecom interface circuits requiring stable component supply and full traceability.
Supply support for P6SMB68AH includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power management, protection, and signal conditioning devices.
The P6SMB68AH belongs to TSC's AEC-Q101-qualified P6SMBx(A)H TVS family, engineered specifically for robust transient suppression in automotive and harsh-environment industrial systems where reliability under voltage stress is mission-critical.
FAQ
What is the polarity configuration of the P6SMB68AH?
The P6SMB68AH is a unidirectional TVS diode, configured with cathode marked on the package body. It conducts only during reverse-biased overvoltage events - i.e., when the cathode voltage exceeds anode voltage by ≥64.6 V. This makes it ideal for DC rail protection where polarity is fixed, unlike bidirectional variants (e.g., P6SMB68CAH) used in AC or differential signal lines. The P6SMB68AH must be oriented correctly on PCB to ensure proper clamping function.
Does the P6SMB68AH meet automotive qualification standards?
Yes, the P6SMB68AH is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per the AEC-Q101 standard. It also complies with ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b for automotive electrical transient immunity. These qualifications confirm its suitability for under-hood and chassis-mounted applications where the P6SMB68AH operates reliably across -55°C to +150°C junction temperatures.
What is the maximum clamping voltage of the P6SMB68AH under surge conditions?
The maximum clamping voltage (VC) of the P6SMB68AH is 92.0 V at a peak pulse current (IPPM) of 6.8 A, tested with a 10/1000 µs waveform. This value represents the upper bound of voltage seen by downstream circuitry during worst-case transient events. Because VC is guaranteed ≤92.0 V, designers can confidently select downstream ICs with absolute maximum ratings ≥95 V - ensuring margin against failure while avoiding over-specification. The P6SMB68AH achieves this with sub-picosecond response and low dynamic impedance.
How does the P6SMB68AH compare to the P6SMB68H variant?
The P6SMB68AH offers tighter breakdown voltage tolerance (64.6–71.4 V) versus the P6SMB68H (61.2–74.8 V), resulting in more consistent clamping behavior and reduced design margin uncertainty. Both share identical package (DO-214AA), power rating (600 W), and thermal specs, but the "A" suffix denotes enhanced VBR uniformity - critical for high-volume automotive production where binning and yield consistency matter. For new designs targeting AEC-Q101 compliance, the P6SMB68AH is the recommended variant over P6SMB68H.
Is the P6SMB68AH compatible with lead-free reflow soldering processes?
Yes, the P6SMB68AH features matte tin-plated leads and is rated for lead-free reflow soldering per J-STD-002. Its DO-214AA (SMB) package withstands peak temperatures up to 260°C for 10 seconds, matching standard Pb-free reflow profiles. The molding compound meets UL 94V-0 flammability rating, and the device is RoHS compliant and halogen-free per IEC 61249-2-21 - confirming full compatibility with modern eco-conscious manufacturing requirements for the P6SMB68AH.
P6SMB68AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 6.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB68AH FAQ
1.How can I place an order for P6SMB68AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68AH on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P6SMB68AH reliable?
The price and inventory of P6SMB68AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68AH is usually 5 days.
3.What payment methods are accepted for P6SMB68AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68AH?
P6SMB68AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68AH order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P6SMB68AH?
For technical support, including P6SMB68AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68AH requirements.
6.How does Aetrix verify that P6SMB68AH is sourced from the original manufacturer or authorized distributors?
All P6SMB68AH products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P6SMB68AH meets industry standards.
7.What is the process for return or replacement of P6SMB68AH?
All P6SMB68AH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68AH, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P6SMB68AH part is unused and in its original packaging.
Return procedure for P6SMB68AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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